Metal-frame screen.



Y. t s. W. MOGRATH.

` MBTAL FRAME ssamm.

APPLICATION FILED 00123, 1908.

l 9&7838. K Patented Feb. 1,19l0.

l 2 SHEETS-SHEET 1. 'A f7.1.

S. W. MGGRATH.

METAL FRAME SCEEFE. APPLICATION H LBD ooms, 190s.

Patented Feb. 1,1910.

2 SHEETS-SHEET 2.

M Wwf..

STEPHEN W. NOGBATH, OF CINCINNATI, OHIO.

METALFRAME SCREEN.

Specification of letters Patentl Application filed October 3, 1908.Serial No. 455,969.

To all whom 'it lmay concern:

Be it known that I, STEIHEN lV. MCGRATH, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful -Improvements in Metal-FrameScreens, of which the following is a specification.

My invention relates to metal frame screens of the box-frame type shownand described in Letters Patent of the United States No. 767,487,granted W. E. Monroe, August 16, 1904, and its object is to improve uponthe screen shown and described in that stent, and the invention will bereadily unerstood from the following description and .claims and fromthe drawings, in which Y latter:

Figure 1 is a front elevation of a metalframe Window-screen embodving myinven-V tion, the same bein partly broken away and partly in section orbetter illustration of parts, also showing the friction-spring at theside of the frame in assumed position in dotted lines, the window-framebeing also indicated in dotted lines and broken away. Fig. 2 is aperspective View of one of the corners of the frame in separatedrelation. Fig. 3 is a cross section of my improved device taken on theline '3-3 of Fig. 1 but showing screen-cloths at both sides of thescreen. Fi 4 is a cross section of the parts shown in 1g. 3, taken on asimilar line, butl showing the same in separated relation. Fig. 5 is adetail in cross section on the line 5 of Fig. 1, showing the frame inassembled relai tion with the inner reinforce corner and the i outercorner in place. Fig. 6 is a detail in edge relation showing thefriction-spring i in place. Fig. 7 is a vertical section of the same onthe-line 7-7 of Fig. 6, and Fig. 8 is a cross section of the saine onthe line S-B of Fig. 6.

The Stiles 1 and rails 2 of the screen each comprise an innerframe-member 3 and an outer frame-member 4, both of which are ofsubstantial U-shaped channel form 1n cross section, with the Walls ofthe channels exl being formed respectively 1n the outer corwith thescreen-cloth when assexnb-ed for:

tending in directions .substantially arallcl forming a box-frame screenof the character of that shown and described in the aforesaid patent, inwhich the Walls of the framemembers are substantially parallel to theplane of the screen-cloth.

The inner frame-member comprises a. base 5 and walls 6 6, the latterextending outwardly from the respective sides of'thebase. The outerframe-member comprises a base 7 and walls 8 8, the latter extending` in-Wardly from the respective sides of the base. The walls of theseframe-members preferably extend substantially radial of the screen whenassembled.

` utwardly extending beads 9 9 are between the base 5 and respectiveWalls 6 of the inner frame-member, being formed up from the sheet metalof which the inner frame-member is composed.

Channels 10 are thus formed, in the ends of which, at the corners of thescreen, limbs 11 11 of inner reinforce corner pieces l2 are received.These reinforce cornerieces are preferably formed of metal Whici litsthe channels and which is bent for forming the limbs, which aresubstantially at Arightangles to each other. The limbs are received inthe channels of the inner frame-members for reinforcing the screen atthe corner thereof. The outer ends of the Walls 6 are preferably bentinwardly as shown at 13, being preferably bent back upon the walls andforming strengthening edges for the same.

The walls 8 of the outer frame-members may be provided with inwardlyprojecting beads 16 adjacent their bases. These beads serve the purposeof strengthening the outer members.

The inner frame-members are preferably mitered at the corners, as shownvat, 21, and the outer frame-members are preferably mitered at thecorners, as shown at 22. An outer corner-piece 23, which preferablycomprises a base 2l and Walls 25 having extensions 26, covers the jointat each ot the cor ners of the screen. The respective walls andextensions of the outer corner-piece are provided With inwardly extendinbeads 27. The beads 27 are received within the outer grooves of thebeads 16. Rivets 29 pass through the outer cornerieee and the walls ofthe outer and inner rame-members for securing the parts together,recesses 30 31 32 ner-piece, and in the walls of the outer and innerframe members for accommodating the rivet-heads, it being understoodthat the screen-cloth, shown at 33, will have been seaired in placebefore the frame is riveted together, und, if desired, one or morerivets, as chown at 34, may be passed through the Patented Feb. 1, 1910.

walls of the outer and' inner frame-members intermediate of the cornersfor securing the parts together.

In assembling the screen, the inner reinforce corner-pieces are receivedin the ends of the channels 10 at the respective ends of the Stiles andrails f forming the corners.

these inner frame-members respectively bei ing preferably a one-piecestructure for the respective .stiles and rails, thereby forming i aninner frame for the sei-een. The walls of the inner frame-memberspreferably diverge rom each other slightly as indicated in Fifi'.

Ll.' The screen-cloth is received about the outer ends of these diergngwalls and bent inwardly as shown at The inwardly bent end of thescreen-cloth is received within the channel of the inner traine-memberif desired. There muy be a screen-cloth on but one side of the inner f'ame as shown at 33 and there may be an additional screencloth 36 at theother side of the inner traine, the inner edges 37 of which are bentover the other wall of the inner fraaie-member and received within thechannels of saldi frame-members, the .said screen-cloth 3G beingpreferably a protecting cloth ot' wider mesh than the screen cloth 33.Then now the outer frame-members are forced over the innerframe-members, the walls of the. latter which have been in tiexedrelation, are reiiexed into parallelism with the screen-cloth, therebvstretching the .screen-cloth between 'l the frame-members at theopposite ends of The screen -ciotli is rml;1 clasped between the wallsof the respective inner and outer members. The inner edges l of thewalls of the outer frame-members' clamp the screen-cloth betweentheniseli-'es i the screen.

and the beads of the inner frame-members.

"over which latter the screen-cloth is curled.

The mouths 38 39 of the respective inner and outer frame-members ai'epresented in directions substantially parallel with the' screen-clothwhen the screen is assembled. lVhen the outer-frame-inenibers have beenreceived about the inner frame-members and the screen-cloth thereon, theouter cornerpieces are secured in place as hereinbefore described.

41 il represent friet]oli-sprung.` one or These i more if which may beemployed. spring.; are shown as leaf-springs and are respectivelyreceived through slits 2 t3 t-l in the base o" one of the outerframe-members. whereby an f nter strap l5 and an inner strap 4G areformed. between which the frictionspring is received. the heel -li' ofsaid spring being received under the hase of said outer l The saidfriction-springr A frame -1 member. extends outwardly away from thescreencloth iii a curve whose convexity is presented toward the side ofthe screen-frame.

In other words. the side of said screen-frame is tangent to said curve.Said spring is preferably provided with au inward exten- ;Y sion 4S.which projects through an aperture E 49 in the base of .said outerframe-member. there being a toe In.) at the inner end ol said extensioninside said outer l'ra11W-member. whirh i` adapted to contact the inner'lace of the base ot' .said outer traine-mendier. thereby limiting theoutward projection of l `aid spring and holding said spring in' placeunder tension. the tension of said sprinpr Q locking the same in placein the .slits and avoiding necessity :if other fastening iueans. Whensaid screen is in place in the window- 'traine` indicated in dottfdlinesat 5l. which forms a guide-way for the screen. the outer end ofsaid spring is forced toward the traine of the screen and thereb)vexerts additional friction against longitudinal movement of the springat the walls of ksaid slits. Ii' Vit is desired to release saidspring.;` this may he easily done by forcing the inner end of the inwardextension -LS lengthwise of the springr for releasing the toe 50 fromcontart with the inner face o the outer framemenilier. therebypermitting it to pass through the aperture Vif). 'lien forced inwardl v.the exten-ion is received within the channels of the traine-members. Theside of the screen-frame opposite the spring may he provided with ahandle and a suitable raising handle 53 ma) also he provided.

Havingr thus fully described niv invention. what l clain'i as new anddesire to secure b v Letters Patent is:

1- In a metal-frame screen of the character deseribed. the combinationof an inner frame-member. an outer frame-member, and a screen-cloth.said trame-members comprising opposed stile and rail lengths. the said glengths of said members being of substantial U-.shapcd channel forni incross-.section vcomprising a base and side walls having months.presented toward ich other and suhstantialli parallel to the planeofsaid screencloth. the said stile and rail lengths of said i innerfrauie-ineniln-r eat-li having an outwardly projectingr bead exteudin rlongituddinalljr thereof adjacent its base. said screencloth being'curled over said heads and clamped between the adjacent side walls atone of the sides' of `4aid frame-nienihers. said srreen-elotli beingstretched between the i heads of opposed lengths of said innerfrmne-iueinlier so that the plane of .said screen-cloth between saidbeads will be eo- V incident with the outer faces of the said heads forlocating .said .screen-cloth between said heads of said opposed lengthsof said inner fi'aini \-niendwr to one side ot' the frame of saidsei-een, substantially as described.

2. ln a metal-frame screen of the character described. the mmhination ofan outer fraiue-nieuiher. an inner frame-member, and a screen-cloth.said frame-members comprising opposed stile and rail lengths, the saidino stantial elninin-l-tnrnt in rro=s-seetioa compris-ing' a base andside walls and having mouths presented toward each other, the said stileand rail lengths ot said inner tramcmember having' outwardly projectingbeads and the said stile and rail lengths of said outer iranie-memberhaving inwardly protndinally ol' and adjacent to the bases. of thelengths on which the saine are located. the' sant beads being respeet i\'el located betweenthe bases of the lengths of thatframe-inemfralne-members, and said screen-cloth being located betweenthe free edges of said sidewalls and beads at one of theV sides of saidframe-members and stretched bet\\'een.the bends of o )posed stile andrail lengths of said inner rameanexnber, the said stretched portionof.said screen-cloth -extending outwardly beyond said beads andside-walls, substantially as described.

1n a metal-frame screen of the characterdeseribtal, the eombination ofouterv and inner frame. members, and :t screen -cloth, said .inner andontet.traine-members compris-ing opposed stile and rail lengths, thesaid lengths of said frame-members being each of substantialchannel-forni in crossseetion comprising a base and opposed sidewalls,said opposed side-walls bein;r at the respective sides ot' said bases.the said stile and rail lengths of said inner {rante-member bavingontwardl;v projecting beads adiacent their bases and the. said stile andrail lengths of said outer trame-member having' inwardl) projectinwbeads adjacent their bases, the .said beats on one of said frame-membersbeingin the lateral planes of the side-walls ot' the other of saidframe-members. said sereen-clotb being received between said opposedside-walls and beads at one of the .sides of said frame-members andstretched between the beads of opposed stile and rail lengths of .saidinner frame-member for leating the plane of said stretched portion ofsaid sereen-eloth when extended to one side of said inner -frame-memberoutside saidl inner f ranie-member. substantially as described.

4. metal-frame screen of the character described comprising incombination stiles and rails, having joints at the corners of saidscreen, said stiles and rails embracing opposed inner and outerframe-members, a sereen-cloth, said frame-members being of substantialchannel form comprising a base and opposed side-walls, said opposedsidewalls being at the respective sides of the bases. said opposedside-walls at: one of said sides being spaced from said opposed sidewalls at; the `other of said sides, said inner frame-member beingprovided with an outwardly projet-ting bead extending longitudinali)thereof and bent from the metal of which said inner tranne-metaler iscomposed t'or forming` an inner channel` inner corner piecesrespeetivelv having' limbs at substant tial right-angles to each otherreceived bv said channels, in said :stiles and rails at the lresina-tive corners of said screen, and outer iecting heads.the .saidbeads extending lungi` zorlie1-pieees .received over aid 'joints atsai-l eorners.

ln a metal-traimscreen of the character dewtilied. the eunibinatimi ofStiles atnl railsronxprising inner and unter frann--nienr ber on whichthe same are located and the side walls of the lengths of the other ofsaid 'bers of channel torni comprisingr a base and side-walls sparedapart projecting trom said base. a screen-cloth received between theside-walls ot' said franie-nietnbers, said sidewalls extending in planes.substantially parallel with the plane of said screen-cloth, each ofsaid inner traine-meinters having n bend at each side ot' its baseformed therefrom for forming an inner channel, and inner reinforcecorner-pieces respectively having limbs at substantially right anglesto. each other received in said channels of said respective stiles andrails at the corners of the sei-een. substantially as described.

t. In a metal-frame screen, the combination of a sheet-metalframe-member provided with slits for forming straps. and a leaffriction-spring, one end of which is received b v said slits for beinglrecefved alternately under and above said straps of said sheet-metalframe-member at ditferent points. the other end of said leaffrictionspring extending ontwardljvy on a curve whose convexity ispresented toward said frame-member and acting when tiexed out of normalposition to bind said first-named end of said spring against saidstraps.

T. In a metal-frame screen, the combination of a :sheet -metalframe-member provided with slits for forming straps. a leaffriction-spring, one end of which is received by said slits for beingreceived under and above said straps of said sheet-metal framexnember atdiii'erent points, the other end of said leaf friction-spring extendingout-f wardly 011 a curve whose convexity is presented toward saidtrame-member and acting when flexed ont of normal position to bind saidfirst-named end of said spring against said straps, saidleaffl'ictionspring having an inward extension and said metalframe-member having an aperture through which said extension isreceived, and limit- -leaf friction-spring adapted to contact theslideway for said screen, saidA frame member being provided with slitsthrough which one 4. Lese end of said friction-spring is received, theother end of said friction-spring being bent outwardly from said slitsand being provided with an extension, the said frumemexnber beingprovided with an aperture for receiving said extension when said springflexed ont of normal position by Contact with said slidewe v. i

9. In :l inetni-rn1ne screen` the combination, with n screen-eloth.I ofa hollow metalfrznne embracing inner and outer frameineinbeis havingbases und opposed side walls at the respective sidesof said bases, saidside-walls being substantially parallel to the plane of said-screen-cloth, a frictionspring secured nl one end to said frame andadapted to contact the guidewu of said screen, the other end of saidfrictlon-spring posed side-walls at the respective sides ofsaid bases,said extension having a. hook in its inner end received through saidnpertureV and said hook contacting the inside of said frame for limitingthe outward movement of said spring, substantially as described.

1n testimonj,v whereof-I have subscribed my naine hereto in the presenceof two subscribing witnesses. Y

STEPHEN iV. MCGRATH. Witnesses: LILLIAN BUnNm'r, O. S. BRYANT.

